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23,226
RESULTS

Media Type
22,035
texts
372
images
284
movies
273
audio
257
concerts
4
data
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Topics & Subjects
7,920
ERIC Archive
6,679
DTIC Archive
4,566
NASA Technical Reports Server (NTRS)
1,433
Higher Education
1,343
Elementary Secondary Education
773
Secondary Education
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Collection
7,920
Education Resources Information Center (ERIC) Archive
6,679
Defense Technical Information Archive
4,566
NASA Network Resource and Training Site
848
American Libraries
446
The Magazine Rack
369
NASA Images
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Creator
7,920
eric
6,679
defense technical information center
4,566
nasa technical reports server (ntrs)
313
lee enterprises
232
ukrainian national association, inc.
220
grateful dead
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Language
21,843
English
232
Ukrainian
60
Korean
37
French
30
Spanish
28
Dutch
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